Railway-switch lock.



No. 774,004. PATENTED NOV. 1, 1904.

A. A. STROM.

RAILWAY SWITCH LOCK.

APPLIOATIOH FILED NOV. 1a. 1903.

N0 MODEL.

its. 774,004.

UNITED STATES Patented November 1, 1904.

PATENT OEEicE,

AXEL A. STROM, OF CHICAGO, ILLINOIS, ASSIGN-OR TO PETTIBONE, MULLIKEN 8: COMPANY, A CORPORATION OF ILLINOIS.

RAILWAY-SWITCH LOCK.

SPECIFICATION forming part of Letters Patent N0. 774,004, dated November 1, 1904.

Application filed November 18, 1903. Serial No. 181,600. (No model.)

either position to which it is thrown byoperating the stand. Such devices have hitherto been provided as adjuncts of the switch-stands immediately connected therewith and forming, practically, parts thereof, whereby in the event of wreckage of a stand so equipped the lock is likewise wrecked, with the efiect of impairing or destroying its switch-locking function and leaving the switch-rails loose.

The ob ect of my improvement 1s to avoid the result referred to of wrecking the switch-stand by connecting the locking medium with the switch more or less remotely from the operating primary stand, whereby the only connection of the lock with that stand shall be through the medium of the switch, so that the switch-stand proper may become wrecked or otherwise impaired for use without impairing the function of the lock which is actuated b the stand in throwing the switch. 7

Referring to the accompanying drawings, Figure 1 is a plan view of a railway-switch equipped with my improvementin a preferred form, and Fig. 2 is a view in elevation of the switch-lock in the form of a known variety of switch-stand.

My improvement is shown in the drawings to be applied to a known construction of split switch formed of'connected point-rails A A between main or stock rails B B and connected from a head-rod O through the medium of a connecting-rod D with a switch-stand 'E of any known or suitable variety, and therefore only represented in plan.

At F is represented the switch-lock in its preferred form of a switch-stand of the variety involvinga sector-like body at, having fulcrumed upon it a lever Z), carrying a weight 0 on one endand joined from its opposite end to a tie-bar of the switch by a connectingrod d. The throw of the switch by the stand E also throws the lever Z) correspondingly,

may, without departure from my invention,

be varied from that presented to any desired relative situation, and the switch-operating device may be other than a switch-stand and be located in any suitable situation, since my invention consists in its broadest sense in combining with any suitable switch-operating device operatively connected with the switch a supplemental lock also connected with the switch, but independently of its said operating device, and actuated by the switch in throwing it by operating said device to lock the a switch in the position to which it has been thrown.

What I claim as new, and desire to secure by Letters Patent, is

1. In combination with a railway-switch, a switch-operating device operatively connected therewith, and a supplemental lock connected with the switch and with said device solely through the switch to be actuated by the throw of the switch to lock it in the position to which it is thrown and permit its release therefrom.

2. In combination witha railway-switch, a switch-stand operatively connected therewith, and a supplemental lock removed from said stand and connected independently thereof with the switch and with said stand solely through the switch to be actuated by the throw of the switch to lock it in the position to which it is thrown and permit its release therefrom.

3. In combination with arailway-switch, a

switch-operating device operatively connected therewith, and a supplemental lock comprising a switch-stand having a sector-like body with a weighted lever i'nlcrumed upon it and connected with the switch independently of said device and devoid of connection with said device other than through the medium of the switch to be actuated. by the throw of the switch to lock it in the position to which it is thrown.

&. In combination with a railway-switch, a switch-stand operatively connected therewith,

and a supplemental lock comprising a switchstand having a sector-like body with a weighted lever iulcrumed upon it and connected with the switch independently of said firstnamed switch stand, from which it is separate, to be actuated by the throw of the switch to lock it in the position to which it is thrown.

AXEL A. STROM.

In presence of VVALTER N. WINBERG, F. M. WIRTZ. 

